water parameters are Ph 6.6, nitrites 0 ppm. Standard PH kit, all water is R/O with deionised water filtration kit costing about 44.99 for all newbies. Do not use tap water, temp at 86-88. Was told to watch for water to turn acidic now. Due for a change this weekend, I can see the waste from the amount od feeder guppies these guys are eaten.